temporary profile

Trying to find out why recently I can't login with my profile.
Windows event logs helpfully say that the ntuser.dat file is in use by another process....but which one?
Windows then creates a temporary profile when logging in.
The profile presumbably is okay as there isn't a problem logging in...

My Windows 7 SP1 PC was running very slow so I tried running a Mcafee scan. Got error: "McAfee proxy service failed to start due to error: Windows cannot verify the digital signature for this file."
Went back to a restore point from a few weeks earlier. After that, whenever I booted the PC it...

Hello tech Support!
I have a few issues with my poor old computer, Its been a long time since it's actually been able to work properly ,
timeline of stuff that made my computer mess up -
October/ something/ 2015
I tried to download a game from a website that only gave me malware
and that...

hey, I am using windows 8. and I got the free windows 10 upgrade. I tried to upgrade that and I don't it has been upgraded or not but whenever I turn on my laptop it puts me into some temporary profile and because of that I am unable to see my all data and files. They want me to download each...